Image processing machine

Details Image processing machine Image processing machine

1992-01-22

1994-07-12

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

382 50, H04N 140

Patent

active

053293800

ABSTRACT:
An image processing machine processes image data of a letter document into binary data which are then put through smoothing-out processing, and image data of a photograph document into binary data by a method in which the optical density of a document is retained, in order to provide high-quality, smooth binary images of both letter documents and photograph documents. One memory stores data both for smoothing-out processing in the case of a letter document and for binary-processing in the case of a photograph document. The memory is used selectively for either type of processing. Thus, circuitry for the processing is simplified.

REFERENCES:
patent: 4723173 (1988-02-01), Tanioka
patent: 4821334 (1989-04-01), Ogino et al.
patent: 4922273 (1990-05-01), Yonekawa et al.
patent: 4924509 (1990-05-01), Yokomizo
patent: 4969052 (1990-11-01), Ishida et al.
patent: 4975786 (1990-12-01), Katayama et al.

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